diff --git a/_grains/keystone_policy.py b/_grains/keystone_policy.py
new file mode 100644
index 0000000..1812c03
--- /dev/null
+++ b/_grains/keystone_policy.py
@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+import salt.config
+import salt.loader
+
+
+def main():
+    path = "/etc/keystone/policy.json"
+    __opts__ = salt.config.minion_config('/etc/salt/minion')
+    keystone_policy_mod = salt.loader.raw_mod(__opts__, 'keystone_policy', None)
+    result = keystone_policy_mod['keystone_policy.rule_list'](path)
+    if result and 'Error' not in result:
+        return {'keystone_policy': result}
+    return {}
+